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(a) An AM signal is given by φAM(t) = [20 + m(t)]cos⁡(2πfct). Find the maximum value of the amplitude Am of the modulating signal m(t), as shown in the following figure, such that no distortion in the modulated signal would occur. Find also the corresponding modulation index. The figure for Problem 01 . (b) A baseband signal is given by m(t) = cos⁡100t cos⁡200t and the carrier signal is given by C(t) = 10cos⁡5000t. Find and sketch the spectra of the DSB-SC modulated signal. Find also the upper sideband and the lower sideband. (c) What is the major drawback of SSB-SC and how can we overcome it?

(a) An AM signal is given by φAM(t) = [20 + m(t)]cos⁡(2πfct). Find the maximum value of the amplitude Am of the modulating signal m(t), as shown in the following figure, such that no distortion in the modulated signal would occur. Find also the corresponding modulation index. The figure for Problem 01 . (b) A baseband signal is given by m(t) = cos⁡100t cos⁡200t and the carrier signal is given by C(t) = 10cos⁡5000t. Find and sketch the spectra of the DSB-SC modulated signal. Find also the upper sideband and the lower sideband. (c) What is the major drawback of SSB-SC and how can we overcome it?

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(a) An AM signal is given by φ A M ( t ) = [ 20 + m ( t ) ] cos ⁡ ( 2 π f c t ) . Find the maximum value of the amplitude A m of the modulating signal m ( t ) , as shown in the following figure, such that no distortion in the modulated signal would occur. Find also the corresponding modulation index. The figure for Problem 01 . (b) A baseband signal is given by m ( t ) = cos ⁡ 100 t cos ⁡ 200 t and the carrier signal is given by C ( t ) = 10 cos ⁡ 5000 t . Find and sketch the spectra of the DSB-SC modulated signal. Find also the upper sideband and the lower sideband. (c) What is the major drawback of SSB-SC and how can we overcome it?

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